Steps of choosing the dog boots: 1. Place a front paw on a piece of white paper. 2. Then press it down just like the dog is walking on the ground. 3. Then mark the paw as the right picture to verify the length and width. 4. Reserve some spaces to keep snug fit, usually within 0.1"~0.2", the larger the paw is, the more reserved. Customer questions & answers Question: Are these okay for the snow (ie they wont get soaked)? Answer: Of course, they are, as the waterproof rubber sole and PU vamp, but not fit for snow too thick as the boots are not high enough. Question: It's too small, can't put the paws in, why? Answer: Usually, there are 3 types of reasons: 1. some customers choosing the size according the hind paws, but usually, the front paws are bigger than the hind paws; 2. some oter customers, measure the paw on the air, but as we know, the paws are fatty, they will extend when the dog is walking on the ground; 3.the dog's feet are too fatty or they have too much hair, even the sole of the boots fit for the paws but the opening of the boots stop them in. Question: It's too big, can't stay on, why? Answer: Maybe you didn't see the size chart before you make the order, maybe our product have some error in size, or the boots just fit for front paws, but too big for the hind paws, as the hind paws are obviously smaller than the front paws, in this case, I suggest you don't buy our boots when the diffirence between the front paws and the hind paws is over 0.4", or you like the boots so much, you can buy two sizes, each for the front paws, each for the hind paws.